Revert http://code.google.com/p/v8/source/detail?r=2670
Revert http://code.google.com/p/v8/source/detail?r=2670

Now we can pass '--expose_gc' to V8 in the layout test controller. This is probably a better option.

Review URL: http://codereview.chromium.org/164520

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@2686 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh